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Fuel cell system

a fuel cell and system technology, applied in the field of fuel cell systems, can solve the problems of fuel cell failure, fuel cell system failure, anode chemical reactivity reduction, etc., and achieve the effect of reducing the deposit of hydrocarbons

Active Publication Date: 2013-07-04
EBERSPAECHER CLIMATE CONTROL SYST GMBH & CO KG
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The present invention is about a fuel cell system that converts fuel into electricity. It also has a reduction means that converts high hydrocarbons in the fuel into lower hydrocarbons that are less likely to cause deposits on the fuel cell's anode. This conversion process prevents the buildup of deposits, especially during cold starts of the fuel cell system. Additionally, the fuel cell system has a recycling means that reuses residual components of the fuel, increasing efficiency. Overall, this invention improves the performance and longevity of fuel cell systems.

Problems solved by technology

The deposit of hydrocarbons on the anode surface leads, however, to a reduction in the chemical reactivity of the anode, which may lead to a failure of the anode and thus of the fuel cell system.

Method used

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Embodiment Construction

[0022]Referring to the drawings in particular, according to FIG. 1, a fuel cell system 1 has a fuel cell unit 2, which comprises at least one fuel cell 3, whereby the embodiment shown has a single fuel cell 3. The fuel cell 3 has a cathode 4 and an anode 5, which are separated from each other by an electrolyte 6. An electric voltage produced by the fuel cell 3 is made available in this case to an electric user 8 via two electric terminals 7, which are connected to the cathode 4 or the anode 5. For producing the electric voltage, the fuel cell 3 is supplied with a cathode gas and an anode gas. For feeding the cathode 4 with cathode gas, the fuel cell system 1 has a cathode gas feed means 9. The cathode gas feed means 9 has a conveying means 10, which feeds a quantity of air to the cathode 4 as cathode gas. For feeding the anode 5 with anode gas, the fuel cell system 1 has an anode gas feed means 11, which comprises a reformer 12. The reformer 12 produces a reformate gas as anode gas,...

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Abstract

A fuel cell system (1) with a fuel cell unit (2) including at least one fuel cell (3), as well as an anode gas feed (11) including a reformer (12). A reduced deposit of hydrocarbons on an anode (5) of the fuel cell (3), especially in case of a cold start of the fuel cell system (1), is achieved when the anode gas feed (11) has a reduction device (14), which is arranged between the reformer (12) and the anode (5).

Description

CROSS REFERENCE TO RELATED APPLICATIONS[0001]This application claims the benefit of priority under 35 U.S.C. §119 of German Patent Application DE 10 2011 079 173.6 filed Jul. 14, 2011, the entire contents of which are incorporated herein by reference.FIELD OF THE INVENTION[0002]The present invention pertains to a fuel cell system, especially for a motor vehicle.BACKGROUND OF THE INVENTION[0003]A fuel cell system produces an electric voltage and makes this available to electric users. The fuel cell system has a fuel cell unit, which usually comprises a plurality of fuel cells, for this purpose. The individual fuel cells have an anode and a cathode, whereby the cathode dissociates and ionizes oxygen and the ionized oxygen migrates through an electrolyte of the fuel cell to the anode and reacts with hydrogen ionized by the anode into water. Thus, an electric potential or electric voltage, which is made available to the electric user, forms at the electrodes of the fuel cell according t...

Claims

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Application Information

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IPC IPC(8): H01M8/06
CPCH01M8/0675H01M8/04022Y02E60/50H01M8/04223H01M8/0618H01M8/04097H01M8/04225H01M8/04
Inventor REINERS, KARSTENWEISS, CHRISTIANKAUPERT, ANDREAS
Owner EBERSPAECHER CLIMATE CONTROL SYST GMBH & CO KG
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